91361 has 4 divisors (see below), whose sum is σ = 92352. Its totient is φ = 90372.

The previous prime is 91331. The next prime is 91367. The reversal of 91361 is 16319.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 91361 - 2⁶ = 91297 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 91361.

It is not an unprimeable number, because it can be changed into a prime (91367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341 + ... + 546.

It is an arithmetic number, because the mean of its divisors is an integer number (23088).

2⁹¹³⁶¹ is an apocalyptic number.

It is an amenable number.

91361 is a deficient number, since it is larger than the sum of its proper divisors (991).

91361 is a wasteful number, since it uses less digits than its factorization.

91361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990.

The product of its digits is 162, while the sum is 20.

The square root of 91361 is about 302.2598220075. The cubic root of 91361 is about 45.0388142482.

The spelling of 91361 in words is "ninety-one thousand, three hundred sixty-one".